124 Mr. H. T. Stainton on Gracilaria, 



Sp. 7. Semifascia, Haw. (PI. XIV. fig. 13.) 



Palpis fuscis, apice albido ; alis anticis rufo-brunneis, macula 

 obliqua albida costali ante medium ; tarsis posticis brunneis, 

 albido-maculatis. 



Semifascia, Haw. L. B. 528, St. 111. iv. 365. 

 Picipennella (F. v. R.), Zell. Linn. Ent. ii. 328. 



Nearest allied to Falconipennella, but smaller, the costal triangle 

 strikingly paler on the side next the base of the wing, the side 

 next the apex of the wing being much suffused with, or entirely 

 lost in, the ground colour of the wing ; besides, the hinder tarsi 

 are dark brown, with only the bases of the joints dirty whitish. 



Expansion of the wings 5 — 5| lines. 



Head and face greyish-brown or greyish-yellow; palpi pale 

 at the base, the terminal joint brown, except the apex, which is 

 whitish ; antennae pale, with strong dark brown annulations ; 

 thorax greyish or reddish brown ; abdomen grey, beneath whitish ; 

 the four anterior legs have the femora and tibiae reddish brown, 

 tarsi reddish brown, the bases of the joints whitish ; the poste- 

 rior legs have the femora yellowish at the base, the apical half 

 brown, tibiae and tarsi dark brown, the bases of the joints whitish. 



Anterior wings very variable in colour, reddish brown, with 

 more or less of a violet tint, and frequently much intermixed 

 with yellowish ; the darker markings on this ground vary much 

 in distinctness, the most prominent is the dark margin of the 

 costal triangle towards the base of the wing ; the costal triangle 

 is towards its hinder margin so much suffused with the ground 

 colour, that it is with difficulty it can be traced, and in some 

 specimens is entirely lost ; that portion of the costal triangle 

 which is nearest the base of the wing is pale yellowish, therefore 

 very prominent, and is continued a short distance along the fold 

 of the wing, forming an oblique semifascia ; the costa beyond the 

 middle is alternately spotted with black and yellowish, and along 

 the inner margin are also several yellowish spots ; apical cilia 

 rufous, or reddish brown, inner marginal cilia grey. 



Posterior wings shining grey, with grey cilia. 



Not scarce in many places ; at Whittlebury, at Almondsbury, 

 near Bristol, and at Mickleham, in September and October. 



